When the ignition switch is placed to the ON position, the ESC indicator light illuminates, then goes off if the ESC system is operating normally.
The ESC indicator light blinks whenever the ESC is operating.
If ESC indicator light stays on, your vehicle may have a malfunction with the ESC system. When this warning light illuminates have your vehicle checked by an authorized HYUNDAI dealer as soon as possible.
The ESC OFF indicator light comes on when the ESC is turned off.
WARNING
When the ESC is blinking, this indicates the ESC is active:
Drive slowly and NEVER attempt to accelerate. NEVER turn the ESC off while the ESC indicator light is blinking or you may lose control of the vehicle resulting in an accident.
NOTICE
Driving with varying tire or wheel sizes may cause the ESC system to malfunction. When replacing tires, make sure they are the same size as your original tires for this vehicle.
Hyundai Sonata LF 2014-2019 Service Manual: Alternator Components and Components Location
Components
1. OAD (Overrunning Alternator Decoupler) 2. Front Bracket3. Front Bearing4. Stator5. Rotor6. Rear Bearing7. Rear Bracket8. Brush Holder Assembly9. Through Bolt10. Rectifier Assembly11. Rear Cover
...
Hyundai Sonata LF 2014-2019 Owners Manual: Auto Door Lock/Unlock Features
Impact sensing door unlock system
All doors will be automatically unlocked when an impact causes the air bags to
deploy.
Speed sensing door lock system
All doors will be automatically locked when vehicle speed exceeds 9 mph (15 km/h).
All of the doors will be automatically unlocked after the engine ...